Crossrail makes tunnel breakthrough under Liverpool Street Station
Crossrail workers have made their latest breakthrough by tunnelling under the City of London.
The £14.8bn project's 1,000-tonne boring machine has broken into the eastern end of Liverpool Street Crossrail station.
By 2018 high-speed trains will run from Reading, through central London to Abbey Wood and Shenfield in Essex.
Joe Inwood reports.